Struct regalloc2::Output

pub struct Output {
    pub num_spillslots: usize,
    pub edits: Vec<(ProgPoint, Edit)>,
    pub allocs: Vec<Allocation>,
    pub inst_alloc_offsets: Vec<u32>,
    pub safepoint_slots: Vec<(ProgPoint, Allocation)>,
    pub debug_locations: Vec<(u32, ProgPoint, ProgPoint, Allocation)>,
    pub stats: Stats,
}

The output of the register allocator.

Fields

num_spillslots: usize

How many spillslots are needed in the frame?

edits: Vec<(ProgPoint, Edit)>

Edits (insertions or removals). Guaranteed to be sorted by program point.

allocs: Vec<Allocation>

Allocations for each operand. Mapping from instruction to allocations provided by inst_alloc_offsets below.

inst_alloc_offsets: Vec<u32>

Allocation offset in allocs for each instruction.

safepoint_slots: Vec<(ProgPoint, Allocation)>

Safepoint records: at a given program point, a reference-typed value lives in the given Allocation. Currently these are guaranteed to be stack slots, but in the future an option may be added to allow reftype value to be kept in registers at safepoints.

debug_locations: Vec<(u32, ProgPoint, ProgPoint, Allocation)>

Debug info: a labeled value (as applied to vregs by Function::debug_value_labels() on the input side) is located in the given allocation from the first program point (inclusive) to the second (exclusive). Guaranteed to be sorted by label and program point, and the ranges are guaranteed to be disjoint.

stats: Stats

Internal stats from the allocator.

Implementations

impl Output

pub fn inst_allocs(&self, inst: Inst) -> &[Allocation]

Get the allocations assigned to a given instruction.

pub fn block_insts_and_edits( &self, func: &impl Function, block: Block, ) -> OutputIter<'_>

Returns an iterator over the instructions and edits in a block, in order.

Trait Implementations

impl Clone for Output

fn clone(&self) -> Output

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Output

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.